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Depression: 21st Century Solutions + The Dark Side of Wheat

Article Publish Status: FREE
Abstract Title:

Combination therapy of Lactobacillus plantarum supernatant and 5-fluouracil increases chemo-sensitivity in colorectal cancer cells.

Abstract Source:

J Microbiol Biotechnol. 2016 May 25. Epub 2016 May 25. PMID: 27221111

Abstract Author(s):

JaeJin An, Eun-Mi Ha

Article Affiliation:

JaeJin An

Abstract:

Colorectal cancer (CRC) is the third most common cancer in the world. Although 5-fluorouracil (5-FU) is the representative chemotherapy drug for colorectal cancer, it has therapeutic limits due to its chemo-resistant characteristics. Colorectal cancer cells can develop into cancer stem cells (CSCs) with self-renewal potential, thereby causing malignant tumors. The human gastrointestinal tract contains complex gut microbiota that is essential for the host's homeostasis. Recently, many studies have reported correlations between gut flora and the onset, progression, and treatment of CRC. The present study confirms that the most representative symbiotic bacteria in humans, Lactobacillus plantarum (LP) supernatant (SN), selectively inhibit the characteristics of 5-FU-resistant colorectal cancer cells (HT-29 and HCT-116). LP SN inhibited the expression of the specific markers CD44, 133, 166, and ALDH1 of CSCs. The combination therapy of LP SN and 5-FU inhibited the survival of CRCs and led to cell death by inducing caspase-3 activity. The combination therapy of LP SN and 5-FU induced an anti-cancer mechanism by inactivating the Wnt/β-catenin signaling of chemo-resistant CRC cells, and reducing the formation and size of colonospheres. In conclusion, our results show that LP SN can enhance the therapeutic effect of 5-FU for colon cancer, and reduce colorectal cancer stem-like cells by reversing the development of resistance toanticancer drugs. This implies that probiotic substances may be useful therapeutic alternatives as biotherapeutics for chemo-resistant CRC.

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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